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ESSLMTl-:lw` CLAY BLBVATOR.

` Patented oct. 27, 1896.

W/TNESSESQI I 'Il /NVENTH WW l @j f @2 @97 @www TOHNEY.

UNITED STATESv PATENT OFFICE.

FRANK S. SLATTERY, OF BRADFORD, PENNSYLVANIA, ASSIGNOR OF ONE- IIALF TO LEMUEL IV. YOUNG, OF SAME PLACE.

CLAY-ELEVATOR.

SPECIFICATION forming part of Letters Batent No. 57 0,106, dated October 2'7, 1896.

Application filed November 22, 1895. Serial Nol 569,848. (No model.)

To au whom it may concern:

Be it known that I, FRANK S. SLATTERY, a citizen of the United States, residing at the city of Bradford, in the county of McKean and State of Pennsylvania, have invented a new and useful Improvement in Clay-Elevators, of which the following is a specification.

My invention relates to improvements in ro elevators forconveying pulverized shale clay from the crusher to the clay-screen. The difficulty encountered with the clay-elevators now in general use for this purpose is that the pulverized clay works between the belt and the face of the lower pulley, piling up on the face of the sai'd pulley and thereby throwing off the belt, which is the cause of much delay and annoyance.

The object of my invention is to provide zo an elevator so constructed that the beltcannot be thrown off while running. I attain this object by the mechanism illustrated in the accompanying drawings, in which- Figure 1 represents a front elevation of the upper portion of myclay-elevator and shows the elevator-buckets extending across the face of the two belts to which they are bolted. Fig. 2 represents a front elevation of one of the pulleys, they being duplicates of each 3o other, and shows an annular ring surrounding the periphery of the pulley at the center of the face longitudinally. Fig. 3 represents a side elevation of my clay-elevator placed in a working position and shows the lower pulley in the boot which receives the pulverized clay from the crusher. Fig. a represents a perspective view of one of the elevator-buckets and shows the groove in the back of same. 4o Similar numerals refer to similar' parts throughout the several views.

In the drawings, numeral l represents the' pulleys, consisting of the hubs 2,'the spokes 3, the rims 4, and the annular rings 5. The rims 4L on each side of the annular rings 5 have a slight convex curve on their faces,

which I find of benefit in making the belts 6 run true.

vIn Fig. 1 the belts 6 are provided with the 5o elevator-buckets 8, which extend across the faces of the belts G and to which they are secured by the bolts 9. The buckets S have their backs 10 formed with the groove 11, which sits over the annular ring 5 and prevents the elevator-buckets 8, when they are traveling on the pulleys 1, from bearing on the annular ring 5.

In Fig. 3 is shown the pulverized clay 12 being delivered to the elevator-buckets 8 through the chute 13, which receives it from 6o the crusher. (Not shown.) There is also shown a portion of the chute 14, which delivers the clay to the screen.

15 is the elevator-boot.

Should it be necessary to enlarge the capacity of the clay-elevator, the pulleys 1 can be made of increased width and additional annular rings 5 placed at such a distance apart as to accommodate the belts 6 between them. Of these latter a proportional number 7o can be added. The elevator-buckets 8 can be increased in length to extend across the face of all the belts 6 and provided on their backs 10 with the grooves 11 equal to the number of and spaced apart the same as the annular rings 5.

My experience with the use of the clayelevator herein described is that when the pulverized clay piles up between one of the belts and the face of the pulley the said belt 8o will stretch a sufficient amount to equalize with the other belt, but cannot work off from the pulley on account of its attachment to the other belt and the annular rings 5, which prevents a lateral movement to the belts 8 5 when they are bolted to the elevator-buckets. When the pulverized clay piles up between both belts and the face of the pulley, each stretch proportionately so that it makes no difference in their working, the annular ring 9o 5 preventing their being thrown off the pulley. It will therefore be` observed that by constructing my elevator as illustrated in the drawings and herein described labove I attain my object.

I do not broadly claim either the pulleys belts, or elevator-buckets; but

Vhat I do claim as my invention, and desire to secure by Letters Patent, is

In a pulverized-clay elevator, the combinaroo tion with an upper and L lower pulley, each the pulleys when said buckets pass over said provided on `ius periphery with au annular pulleys,subetmitiallyas shown :uid described. ridge, centrally located, of two belts passing around said pulleys, one on each side of said FRANK S. SLATTERY. annular ridge, and elevator-buckets secured Tituessesz to said belts, each having a centrallyformed JAMES GEORGE,

depression adapted to receive the ridge ou GEORGE J. VOLF. 

